http://mirror.stanford.edu/yum/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-1of8.iso 
http://mirror.stanford.edu/yum/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-2of8.iso 
http://mirror.stanford.edu/yum/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-3of8.iso 
http://mirror.stanford.edu/yum/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-4of8.iso 
http://mirror.stanford.edu/yum/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-5of8.iso 
http://mirror.stanford.edu/yum/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-6of8.iso 
http://mirror.stanford.edu/yum/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-7of8.iso 
http://mirror.stanford.edu/yum/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-8of8.iso